Title :
Implementation and field trial results of a fast frequency hopped FSK testbed for wireless communications
Author :
Zou, Hanli ; Mohan, Sumit ; Cabric, Danijela ; Daneshrad, Babak
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
This paper describes the implementation of a novel direct digital frequency synthesizer (DDFS) based fast frequency-hopping frequency shift keyed (FSK) testbed capable of transmitting 160 kbps with a hopping rate up to 80 khops/s. The testbed is equipped with a variety of user-defined parameters in order to fully characterize its performance over the physical channel. Initial measurements using the testbed were carried out in different wireless environments and indicate that higher hopping rates can significantly improve radio link quality when proper diversity combining is utilized
Keywords :
direct digital synthesis; diversity reception; frequency hop communication; frequency shift keying; indoor radio; radio links; telecommunication equipment testing; 160 kbit/s; direct digital frequency synthesizer; diversity combining; fast frequency hopped FSK testbed; fast frequency-hopping; field trial results; frequency shift keying; hopping rates; indoor wireless environment; physical channel; radio link quality; user-defined parameters; wireless communications; wireless environments; CMOS technology; Diversity reception; Energy consumption; Frequency diversity; Frequency shift keying; Frequency synthesizers; Phase locked loops; Radio link; System testing; Transceivers;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.937168
